The Stem,needle Valve, cataloged under National Stock Number 4820-01-539-4015, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-539-4015 |
| Primary Part Number | 95556-10 |
| Item Name | Stem,needle Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Disk Style | FLATTED |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Material | STEEL COMP 316 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3912F8B ITEM 3 | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| 95556-10 PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
NSN 4820-01-539-4015 is a Stem,needle Valve, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-539-4015 has 2 manufacturer part numbers on file: 3912F8B ITEM 3 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 95556-10 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).
Key specifications for 95556-10: Stem Actuating End Type: THREADED EXTERNALLY; Disk Style: FLATTED; Valve Size for Which Designed: 0.500 INCHES IN; End Item Identification: 4820-01-539-3993; NEEDLE GLOBE VALVE FOR LCS1. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.